// B2035 write by cn_ryh
#include <iostream>
using namespace std;
int main()
{
    int a;
    cin >> a;
    if (a > 0)
    {
        cout << "positive" << endl;
    }
    else if (a == 0)
    {
        cout << "zero" << endl;
    }
    else
    {
        cout << "negative" << endl;
    }
    return 0;
}